Hole saw



FIG. 1 is a perspective view of a hole saw showing my new design;

FIG. 2 is a front elevational view showing the design for the hole saw of FIG. 1;

FIG. 3 is a left side elevational view showing the design for the hole saw of FIG. 1;

FIG. 4 is a rear elevational view showing the design for the hole saw of FIG. 1;

FIG. 5 is a right side elevational view showing the design for the hole saw of FIG. 1;

FIG. 6 is a top plan view showing the design for the hole saw of FIG. 1; and,

FIG. 7 is a bottom plan view showing the design for the hole saw of FIG. 1. 

CLAIM The ornamental design for a hole saw, as shown and described. 